ADV7511W HARDWARE USER’S GUIDE
Rev.A
Page 32
of 45
Rev A
Identification Data (EDID) EEPROM on the HDMI/DVI sink is expected to have an address of 0xA0. It is
recommended to match the length of the DDCSCL and DDCSDA lines.
6.2.4
Interrupt Output (INT)
The ADV7511W provides the INT (interrupt) pin in order to enable an interrupt driven system design. The interrupt
pin is an open drain output. It should be pulled to a logic high level (such as 1.8V or 3.3V depending on the high logic
level of the microcontroller) through a resistor (2kOhm to 5kOhm). It should also be connected to the input of the
system’s microcontroller. Refer to the ADV7511 Programming Guide for additional information.
6.2.5 PLL Circuit
The phase-locked loop (PLL) generates the TMDS output clock as well as clocks used internally by the ADV7511W to
serialize the data. The PLL filters high-frequency jitter components to minimize the output data clock jitter.
6.3
Consumer Electronic Control (CEC)
6.3.1 Unused Inputs
If the CEC function is not used, the CEC_IO and CEC_CLK pins should be connected to ground.
6.3.2
CEC Function
The ADV7511W has a Consumer Electronic Control (CEC) receiver/transmitter function which captures and buffers
three (3) command messages and passes them on to the host. CEC is a single-wire, bidirectional interface intended to
facilitate the control of any device on an HDMI network, as typified in ▶ Figure 16
, with the remote control unit or on-
device control buttons of any other device connected to the network. Defined as an optional feature in the HDMI
specification, it is based on the AV Link function defined in the European SCART (Syndicat des Constructeurs
d'Appareils Radiorécepteurs et Téléviseurs) specification. ▶ Table 13
describes some typical end-user CEC features.
Figure 16
Typical All-HDMI Home Theatre
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